Improvement in gin-saw-filing machines



W. l. JOHNSON.

'Gin-Saw Filing Machines.

No, 155,655, Patented 0ct.6,'18714.

E wnuEssEs:

UNITED STATES PATENT GEEIOE.

WILEY J. JOHNSON, OF HERNANDO, MISSISSIPPI.

IMPROVEMENT IN GIN-SAW-FILING MACHINES.

Specication forming part of Letters Patent No. 155,655, dated October 6, 1874; application filed I July 18, 1874.

To all whom it may concern:

Be it known that I, WILEY J. JOHNSON, of Hernando, in the county of De Soto and State of Mississippi, have invented a new and Improved Gin-Saw-Filing Machine, of which the following is a specification:

The invention will first ebe fully described,

y thus affordingmeans Of holding les for filing two saws at once, the saws differing in their distances apart accordingly. The shifting head also allows of adjusting the tiles to saws of which the teeth are not in the same line. The shanks F of these tiles are made to spring, so that slight variations of distance apart between the saws and the tiles may be compensated by springing one of the stocks. They are also required to spring, in order to regulate the pressure On the saws; but this may also be regulated, to some extent, by pressing the files against them when setting the lingmachine bed G along the frame H, which stands parallel with the gin-saw shaft. The stock O,'which carries thc tile-head, works in a race, I, which swings On the pivot J in the axis of the crank-shaft K, to shift the tiles to the bevel Of the teeth, and it is held fast when adjusted by the clamp-screw L. When adjusting the tiles in this manner, the bed G is shifted along to move the files against the teeth after the required inclination of the les is obtained. The bed Gr shifts along the frame H to shift the tiles to other saws, and -it is fastened by the clamping-block M and screw N.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The triangular file-head, having three holes for tiles at unequal distances apart, and arranged to shift around on the stock, in the manner described.

2. The stock-race, pivoted centrally and in line with crank-shaft, as shown and described, so that it may be turned to any angle.

W. J. JOHNSON.

Witnesses JOHN W. WOODS, CEAS. H. ROBERTSON. 

